Another kind of large pearl is Black South Sea pearl produced from black-lippedBlack lip Pearl Oyster Pinctada margaritarifera pearl oyster Pinctada margaritifera whose habitat is the south Pacific. This oyster is slightly smaller than Pinctada maxima, growing to a diameter of 12cm to 15cm, with the largest sometimes exceeding 20cm. The pearls it produces are usually 8mm to 15mm in diameter. The main cultivation areas are the beautiful islands and atolls surrounding Tahiti in French Polynesia where cultivation started in the early 1960s. The first harvest of over 1,000 pearls was in 1965.